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APPLICATION FILED AuG.9. I9II.

CHARLES D. MOSHER, OF-NEW YORK,A N. Y.

FURNACE.

Specification of Letters Patent. Patented D90, Q, 1918,

Application filed August 9, 1917. Serial No. 185,227.

To all whom t may concern Be it known that I', CHARLES D. Mosman, a citizen of the United States, residing -at the borough of Manhattan, in the county of New York and State of New York, have invented certain new and useful Improvements in Furnaces, of which the following is a specification, reference being had there in to the accompanying drawing.

My invention relates to improvements in furnaces and has particular reference to means for burning liquid or gaseous' fuel in such a manner as to insure a proper. mixture of air therewith at the proper temperature o insure more perfect combustion.

`Re erring to the accompanying drawings,

Figure 1 illustrates in side elevation, partly broken away, an application of my invention as applied to a suitable form of furnace.` Fig. 1a is a view looking from left to vrightv at Fig. 1 on the line 1a thereof. Fig. 2 is an enlarged detail in front elevation of part of the furnace interior structure. Fig. 3 is a cross-section on the line ei-3A of Fig. 2. Fig. 4 is a similar view to Fig. 2, illustrating a modified form of unit, and Fig. 5 is 5--5 of Fig. 4. Fig. 6 is another -view similar to Figs. 2 and 4, but illustrating another modification, Fig. 7 is takenon the line 7 7 of Fig. 6, and Fig. 8 is a side elevation of a suitable furnace, illustrating a nested arrangement of units for the furnace interior structure.

Referring to Fig. 1, 8-9 are the usual front and. rear walls of the furnace, and 10 indicates a suitable chamber therein which may be arranged substantially as shown so as to be in communication with the air inlet 11. 12 indicates a structure preferably of carborundum or other suitable material substantially in the form shown and provided with 4passages 13 allowing air entering the chamber 10 from the inlet 11. to pass upwardly through said passages 13 where the air is mixed with the incoming l jet of fuel 14. 4

In the form illustrated more particularly in Figs. 2 and 3, it will be observed that the passage 15 is deeper at the bottom than at the top, although of substantially the same width. This restricts the delivery end of the passage without narrowing the stream of air emitted therefrom.

1n the form shown in Figs. 4 and 5 the passages 16 it will be observed are prefera cross-section on .the line ably narrower and may be shallower at the top as shown, and in the modification shown in Figs. 6 and 7 'the passages 17 are illustrated 'as preferably of more uniform depth producing a nozzle or restricted area at the outlet Yend of the several passages through 4which the air discharges for mixing' with the incoming fuel.

' In the one embodiment of my invention, the several sections or units are preferably separate and nested together as shown in Fig. 8 and are provided with'an upper edge 18 which serves to prevent the incoming stream of fuel 14 from striking into the passage behind the upper edge of the'preceding section, thus allowing the air from the chamber 10 or 10 in Fig. 8, to be jetted ineI direction opposed to the incoming stream 14, while at the same time allowing free and unimpeded egress for the air immediately prior tothe same becoming mixed with said fuel which of course is preferably delivered in afan-shaped jet. 1n the form of my invention shown in Fig. 1, the furnace interior structure is preferably integral.

The individual sections or units may be nested upon the grate bars as shown in Fig. 8 and are provided with passages of less area at the outlet than at the inlet side, and this reduction of area may be made either by reducing the depth or width at the outlet end of the passage or by reducing boththe depth and width at said outlet end of the passage as maybe found most desirable under the particular conditions for which the furnace is to be applied. The fuel 14 being preferably injected under pressure over the entire upper portion of the sections or units mixes with the air passing upwardly'from the chamber 10 or 10 through the channels or passages between the several units or sections where the. same is thereupon thoroughlyl mixed and ignited, heating the water within the boiler tubes, the products of combustion escaping through the Hue 19.

Of course it will be understood that vari- 011s modifications may be made in the construction and arrangement of parts without departing fromthe spirit of the invention as claimed.

1 claim:

1. ln a furnace, a structure having a series of passages extending upwardly and rearwardly from the bottom, then forwardly and upwardly through the top thereof, a burner adapted to feed fuel into said, furnace, means in combination with said furnace for admitting air thereto, said pasli sages of greater area at the bottom than at 2. In a furnace, a structure having a series of passages extending upwardly and rearwardly from vthe bottom, then lforward] IO and upwardly through the top thereo a burneradapted to feed fuel into said furnace, means in combination with said furnace for admitting air thereto, said passages Wider at ythe bottom than at the top.

In testimony whereof I hereunto ax my 15 signature in the presence of two witnesses. A CHARLES D. MOSHER. Witnesses: v

DOLORES I. TOLEDO, THOMAS; A; I-IILL. 

